US Bridges

Parrish Avenue over Brown Ditch

Fair

Lake County, Indiana · 01.00 N. of 236th Ave · Structure no. 4500169

Built
1993
32 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
97 ft
3 main spans
Daily traffic
584
2012 count
Owner
County
County Highway Agency

About this bridge

Parrish Avenue over Brown Ditch is a prestressed concrete box beam or girders - multiple carrying Parrish Avenue over Brown Ditch in Lake County, Indiana. It was built in 1993, so it is 32 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 584 vehicles a day, roughly 5% of them trucks, projected to reach 772 by 2040. The structure is 97 ft (29.5 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesParrish Avenue
CrossesBrown Ditch
Location01.00 N. of 236th Ave
RouteCounty Highway 0
CountyLake County
StateIndiana
Coordinates41.20305, -87.44829
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.7 US tons
Inventory rating31 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length97 ft (29.5 m)
Longest span50 ft (15.2 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic584 (2012)
Projected traffic772 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$737,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Parrish Avenue over Brown Ditch built?

It was built in 1993, making it 32 years old in 2025.

What condition is Parrish Avenue over Brown Ditch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does Parrish Avenue over Brown Ditch carry?

About 584 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Parrish Avenue over Brown Ditch?

The structure is 97 ft (29.5 m) long with a longest span of 50 ft (15.2 m) and a deck 32 ft wide.

Who owns Parrish Avenue over Brown Ditch?

It is owned by the County Highway Agency.